Nice game! I like the simple visuals and the sound. I do think it is too hard. I had a hard time surviving longer than like 10 seconds with many tries. I think either the enemies need to die more easily or are slower, or the player needs more space to move or can do damage more quickly. To me, it felt like I'd need to develop a sequence of actions that could allow me to inch forward little by little, which seemed very daunting. The movement, aiming, and shooting all feel tight. I feel like being able to shoot faster or more easily somehow would be good. The gameplay definitely feels good and I could imagine getting into a flow state if I could stay alive longer. Some sort of difficulty scaling would be great but I'm sure that's easier said than done. Great work!